Childhood's End

From Author Wars - https://authorwars.com/publications/childhoods-end-356514.html

Overview:

Title: Childhood's End
Author: Arthur C. Clarke
Year: 1956
Publisher: Pan Books
Price: 2/-
Pages: 189
Binding: Paperback
Type: Novel
Title Reference: Childhood's End
Notes:
• Data from Tuck • Cover artist credited here, signature in the bottom left corner is a bit unclear but indeed looks very similar to Quinn's.